Achef holds a 55g egg above the floor. the egg has 0.65j of gravitational potential energy. how fat above the ground is the egg? ?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?